What this MCCB is and what the ratings mean
The Siemens 3VA2063-5HL36-0KL0 is a SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current across the full -25 °C to 70 °C operating range — no derating needed up to 70 °C ambient, which simplifies panel design in warm enclosures. Breaking capacity is 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V — the 240 V figure covers most North American panelboard fault levels, while the 415 V/440 V numbers suit IEC distribution networks where high fault current is common. Designed for line protection, this 3-pole MCCB includes a shunt trip release (STL) and a configurable auxiliary switch block: 2 auxiliary switches plus 1 trip alarm and 1 electrical alarm switch, giving the panel builder both status feedback and remote tripping capability in one package.
Sourcing and lifecycle
Power loss is 5.4 W maximum, which keeps heat dissipation manageable in a crowded panel; the 86 mm depth and 105 mm width fit standard SENTRON 3VA mounting footprints.
Integration notes
Mounts on a DIN rail or direct panel surface; the 181 mm height and 105 mm width match the 3VA2 frame size, so a panel laid out for a 3VA2 MCCB accepts this unit without re-drilling. The basic switch assembly is order code 3VA20635HL360AA0 — if you need a replacement internal mechanism, that's the spare part number.